Commit 57b0ad9e authored by Petr Cvek's avatar Petr Cvek Committed by Mauro Carvalho Chehab
Browse files

media: soc_camera: ov9640: move ov9640 out of soc_camera 



Initial part of ov9640 transition from soc_camera subsystem to a standalone
v4l2 subdevice. The soc_camera version seems to be used only in Palm Zire72
and in (the future) HTC Magician. On these two devices the support is
broken as pxa_camera driver doesn't use soc_camera anymore. The other
mentions from git grep are "TODOs" (in board-osk.c) or chip names for
unsupported sensors on HW which doesn't use soc_camera at all (irelevant).

Copy the driver files from soc_camera and mark the original ones in the
Kconfig description as obsoleted.

Add config option VIDEO_OV9640 to the build files in drivers/media/i2c.

Signed-off-by: default avatarPetr Cvek <petrcvekcz@gmail.com>
Signed-off-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+samsung@kernel.org>
parent 61da76be

drivers/media/i2c/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -820,6 +820,13 @@ config VIDEO_OV7740 
	  This is a Video4Linux2 sensor driver for the OmniVision

	  OV7740 VGA camera sensor.



config VIDEO_OV9640

	tristate "OmniVision OV9640 sensor support"

	depends on I2C && VIDEO_V4L2

	help

	  This is a Video4Linux2 sensor driver for the OmniVision

	  OV9640 camera sensor.



config VIDEO_OV9650

	tristate "OmniVision OV9650/OV9652 sensor support"

	depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API

drivers/media/i2c/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -78,6 +78,7 @@ obj-$(CONFIG_VIDEO_OV7640) += ov7640.o 
obj-$(CONFIG_VIDEO_OV7670) += ov7670.o

obj-$(CONFIG_VIDEO_OV772X) += ov772x.o

obj-$(CONFIG_VIDEO_OV7740) += ov7740.o

obj-$(CONFIG_VIDEO_OV9640) += ov9640.o

obj-$(CONFIG_VIDEO_OV9650) += ov9650.o

obj-$(CONFIG_VIDEO_OV13858) += ov13858.o

obj-$(CONFIG_VIDEO_MT9M032) += mt9m032.o

drivers/media/i2c/ov9640.c

0 → 100644
+738 −0
Original line number Diff line number Diff line 
/*

 * OmniVision OV96xx Camera Driver

 *

 * Copyright (C) 2009 Marek Vasut <marek.vasut@gmail.com>

 *

 * Based on ov772x camera driver:

 *

 * Copyright (C) 2008 Renesas Solutions Corp.

 * Kuninori Morimoto <morimoto.kuninori@renesas.com>

 *

 * Based on ov7670 and soc_camera_platform driver,

 *

 * Copyright 2006-7 Jonathan Corbet <corbet@lwn.net>

 * Copyright (C) 2008 Magnus Damm

 * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */



#include <linux/init.h>

#include <linux/module.h>

#include <linux/i2c.h>

#include <linux/slab.h>

#include <linux/delay.h>

#include <linux/v4l2-mediabus.h>

#include <linux/videodev2.h>



#include <media/soc_camera.h>

#include <media/v4l2-clk.h>

#include <media/v4l2-common.h>

#include <media/v4l2-ctrls.h>



#include "ov9640.h"



#define to_ov9640_sensor(sd)	container_of(sd, struct ov9640_priv, subdev)



/* default register setup */

static const struct ov9640_reg ov9640_regs_dflt[] = {

	{ OV9640_COM5,	OV9640_COM5_SYSCLK | OV9640_COM5_LONGEXP },

	{ OV9640_COM6,	OV9640_COM6_OPT_BLC | OV9640_COM6_ADBLC_BIAS |

			OV9640_COM6_FMT_RST | OV9640_COM6_ADBLC_OPTEN },

	{ OV9640_PSHFT,	OV9640_PSHFT_VAL(0x01) },

	{ OV9640_ACOM,	OV9640_ACOM_2X_ANALOG | OV9640_ACOM_RSVD },

	{ OV9640_TSLB,	OV9640_TSLB_YUYV_UYVY },

	{ OV9640_COM16,	OV9640_COM16_RB_AVG },



	/* Gamma curve P */

	{ 0x6c, 0x40 },	{ 0x6d, 0x30 },	{ 0x6e, 0x4b },	{ 0x6f, 0x60 },

	{ 0x70, 0x70 },	{ 0x71, 0x70 },	{ 0x72, 0x70 },	{ 0x73, 0x70 },

	{ 0x74, 0x60 },	{ 0x75, 0x60 },	{ 0x76, 0x50 },	{ 0x77, 0x48 },

	{ 0x78, 0x3a },	{ 0x79, 0x2e },	{ 0x7a, 0x28 },	{ 0x7b, 0x22 },



	/* Gamma curve T */

	{ 0x7c, 0x04 },	{ 0x7d, 0x07 },	{ 0x7e, 0x10 },	{ 0x7f, 0x28 },

	{ 0x80, 0x36 },	{ 0x81, 0x44 },	{ 0x82, 0x52 },	{ 0x83, 0x60 },

	{ 0x84, 0x6c },	{ 0x85, 0x78 },	{ 0x86, 0x8c },	{ 0x87, 0x9e },

	{ 0x88, 0xbb },	{ 0x89, 0xd2 },	{ 0x8a, 0xe6 },

};



/* Configurations

 * NOTE: for YUV, alter the following registers:

 *		COM12 |= OV9640_COM12_YUV_AVG

 *

 *	 for RGB, alter the following registers:

 *		COM7  |= OV9640_COM7_RGB

 *		COM13 |= OV9640_COM13_RGB_AVG

 *		COM15 |= proper RGB color encoding mode

 */

static const struct ov9640_reg ov9640_regs_qqcif[] = {

	{ OV9640_CLKRC,	OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x0f) },

	{ OV9640_COM1,	OV9640_COM1_QQFMT | OV9640_COM1_HREF_2SKIP },

	{ OV9640_COM4,	OV9640_COM4_QQ_VP | OV9640_COM4_RSVD },

	{ OV9640_COM7,	OV9640_COM7_QCIF },

	{ OV9640_COM12,	OV9640_COM12_RSVD },

	{ OV9640_COM13,	OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN },

	{ OV9640_COM15,	OV9640_COM15_OR_10F0 },

};



static const struct ov9640_reg ov9640_regs_qqvga[] = {

	{ OV9640_CLKRC,	OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x07) },

	{ OV9640_COM1,	OV9640_COM1_QQFMT | OV9640_COM1_HREF_2SKIP },

	{ OV9640_COM4,	OV9640_COM4_QQ_VP | OV9640_COM4_RSVD },

	{ OV9640_COM7,	OV9640_COM7_QVGA },

	{ OV9640_COM12,	OV9640_COM12_RSVD },

	{ OV9640_COM13,	OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN },

	{ OV9640_COM15,	OV9640_COM15_OR_10F0 },

};



static const struct ov9640_reg ov9640_regs_qcif[] = {

	{ OV9640_CLKRC,	OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x07) },

	{ OV9640_COM4,	OV9640_COM4_QQ_VP | OV9640_COM4_RSVD },

	{ OV9640_COM7,	OV9640_COM7_QCIF },

	{ OV9640_COM12,	OV9640_COM12_RSVD },

	{ OV9640_COM13,	OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN },

	{ OV9640_COM15,	OV9640_COM15_OR_10F0 },

};



static const struct ov9640_reg ov9640_regs_qvga[] = {

	{ OV9640_CLKRC,	OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x03) },

	{ OV9640_COM4,	OV9640_COM4_QQ_VP | OV9640_COM4_RSVD },

	{ OV9640_COM7,	OV9640_COM7_QVGA },

	{ OV9640_COM12,	OV9640_COM12_RSVD },

	{ OV9640_COM13,	OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN },

	{ OV9640_COM15,	OV9640_COM15_OR_10F0 },

};



static const struct ov9640_reg ov9640_regs_cif[] = {

	{ OV9640_CLKRC,	OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x03) },

	{ OV9640_COM3,	OV9640_COM3_VP },

	{ OV9640_COM7,	OV9640_COM7_CIF },

	{ OV9640_COM12,	OV9640_COM12_RSVD },

	{ OV9640_COM13,	OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN },

	{ OV9640_COM15,	OV9640_COM15_OR_10F0 },

};



static const struct ov9640_reg ov9640_regs_vga[] = {

	{ OV9640_CLKRC,	OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x01) },

	{ OV9640_COM3,	OV9640_COM3_VP },

	{ OV9640_COM7,	OV9640_COM7_VGA },

	{ OV9640_COM12,	OV9640_COM12_RSVD },

	{ OV9640_COM13,	OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN },

	{ OV9640_COM15,	OV9640_COM15_OR_10F0 },

};



static const struct ov9640_reg ov9640_regs_sxga[] = {

	{ OV9640_CLKRC,	OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x01) },

	{ OV9640_COM3,	OV9640_COM3_VP },

	{ OV9640_COM7,	0 },

	{ OV9640_COM12,	OV9640_COM12_RSVD },

	{ OV9640_COM13,	OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN },

	{ OV9640_COM15,	OV9640_COM15_OR_10F0 },

};



static const struct ov9640_reg ov9640_regs_yuv[] = {

	{ OV9640_MTX1,	0x58 },

	{ OV9640_MTX2,	0x48 },

	{ OV9640_MTX3,	0x10 },

	{ OV9640_MTX4,	0x28 },

	{ OV9640_MTX5,	0x48 },

	{ OV9640_MTX6,	0x70 },

	{ OV9640_MTX7,	0x40 },

	{ OV9640_MTX8,	0x40 },

	{ OV9640_MTX9,	0x40 },

	{ OV9640_MTXS,	0x0f },

};



static const struct ov9640_reg ov9640_regs_rgb[] = {

	{ OV9640_MTX1,	0x71 },

	{ OV9640_MTX2,	0x3e },

	{ OV9640_MTX3,	0x0c },

	{ OV9640_MTX4,	0x33 },

	{ OV9640_MTX5,	0x72 },

	{ OV9640_MTX6,	0x00 },

	{ OV9640_MTX7,	0x2b },

	{ OV9640_MTX8,	0x66 },

	{ OV9640_MTX9,	0xd2 },

	{ OV9640_MTXS,	0x65 },

};



static u32 ov9640_codes[] = {

	MEDIA_BUS_FMT_UYVY8_2X8,

	MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE,

	MEDIA_BUS_FMT_RGB565_2X8_LE,

};



/* read a register */

static int ov9640_reg_read(struct i2c_client *client, u8 reg, u8 *val)

{

	int ret;

	u8 data = reg;

	struct i2c_msg msg = {

		.addr	= client->addr,

		.flags	= 0,

		.len	= 1,

		.buf	= &data,

	};



	ret = i2c_transfer(client->adapter, &msg, 1);

	if (ret < 0)

		goto err;



	msg.flags = I2C_M_RD;

	ret = i2c_transfer(client->adapter, &msg, 1);

	if (ret < 0)

		goto err;



	*val = data;

	return 0;



err:

	dev_err(&client->dev, "Failed reading register 0x%02x!\n", reg);

	return ret;

}



/* write a register */

static int ov9640_reg_write(struct i2c_client *client, u8 reg, u8 val)

{

	int ret;

	u8 _val;

	unsigned char data[2] = { reg, val };

	struct i2c_msg msg = {

		.addr	= client->addr,

		.flags	= 0,

		.len	= 2,

		.buf	= data,

	};



	ret = i2c_transfer(client->adapter, &msg, 1);

	if (ret < 0) {

		dev_err(&client->dev, "Failed writing register 0x%02x!\n", reg);

		return ret;

	}



	/* we have to read the register back ... no idea why, maybe HW bug */

	ret = ov9640_reg_read(client, reg, &_val);

	if (ret)

		dev_err(&client->dev,

			"Failed reading back register 0x%02x!\n", reg);



	return 0;

}





/* Read a register, alter its bits, write it back */

static int ov9640_reg_rmw(struct i2c_client *client, u8 reg, u8 set, u8 unset)

{

	u8 val;

	int ret;



	ret = ov9640_reg_read(client, reg, &val);

	if (ret) {

		dev_err(&client->dev,

			"[Read]-Modify-Write of register %02x failed!\n", reg);

		return ret;

	}



	val |= set;

	val &= ~unset;



	ret = ov9640_reg_write(client, reg, val);

	if (ret)

		dev_err(&client->dev,

			"Read-Modify-[Write] of register %02x failed!\n", reg);



	return ret;

}



/* Soft reset the camera. This has nothing to do with the RESET pin! */

static int ov9640_reset(struct i2c_client *client)

{

	int ret;



	ret = ov9640_reg_write(client, OV9640_COM7, OV9640_COM7_SCCB_RESET);

	if (ret)

		dev_err(&client->dev,

			"An error occurred while entering soft reset!\n");



	return ret;

}



/* Start/Stop streaming from the device */

static int ov9640_s_stream(struct v4l2_subdev *sd, int enable)

{

	return 0;

}



/* Set status of additional camera capabilities */

static int ov9640_s_ctrl(struct v4l2_ctrl *ctrl)

{

	struct ov9640_priv *priv = container_of(ctrl->handler, struct ov9640_priv, hdl);

	struct i2c_client *client = v4l2_get_subdevdata(&priv->subdev);



	switch (ctrl->id) {

	case V4L2_CID_VFLIP:

		if (ctrl->val)

			return ov9640_reg_rmw(client, OV9640_MVFP,

							OV9640_MVFP_V, 0);

		return ov9640_reg_rmw(client, OV9640_MVFP, 0, OV9640_MVFP_V);

	case V4L2_CID_HFLIP:

		if (ctrl->val)

			return ov9640_reg_rmw(client, OV9640_MVFP,

							OV9640_MVFP_H, 0);

		return ov9640_reg_rmw(client, OV9640_MVFP, 0, OV9640_MVFP_H);

	}

	return -EINVAL;

}



#ifdef CONFIG_VIDEO_ADV_DEBUG

static int ov9640_get_register(struct v4l2_subdev *sd,

				struct v4l2_dbg_register *reg)

{

	struct i2c_client *client = v4l2_get_subdevdata(sd);

	int ret;

	u8 val;



	if (reg->reg & ~0xff)

		return -EINVAL;



	reg->size = 1;



	ret = ov9640_reg_read(client, reg->reg, &val);

	if (ret)

		return ret;



	reg->val = (__u64)val;



	return 0;

}



static int ov9640_set_register(struct v4l2_subdev *sd,

				const struct v4l2_dbg_register *reg)

{

	struct i2c_client *client = v4l2_get_subdevdata(sd);



	if (reg->reg & ~0xff || reg->val & ~0xff)

		return -EINVAL;



	return ov9640_reg_write(client, reg->reg, reg->val);

}

#endif



static int ov9640_s_power(struct v4l2_subdev *sd, int on)

{

	struct i2c_client *client = v4l2_get_subdevdata(sd);

	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);

	struct ov9640_priv *priv = to_ov9640_sensor(sd);



	return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);

}



/* select nearest higher resolution for capture */

static void ov9640_res_roundup(u32 *width, u32 *height)

{

	int i;

	enum { QQCIF, QQVGA, QCIF, QVGA, CIF, VGA, SXGA };

	static const int res_x[] = { 88, 160, 176, 320, 352, 640, 1280 };

	static const int res_y[] = { 72, 120, 144, 240, 288, 480, 960 };



	for (i = 0; i < ARRAY_SIZE(res_x); i++) {

		if (res_x[i] >= *width && res_y[i] >= *height) {

			*width = res_x[i];

			*height = res_y[i];

			return;

		}

	}



	*width = res_x[SXGA];

	*height = res_y[SXGA];

}



/* Prepare necessary register changes depending on color encoding */

static void ov9640_alter_regs(u32 code,

			      struct ov9640_reg_alt *alt)

{

	switch (code) {

	default:

	case MEDIA_BUS_FMT_UYVY8_2X8:

		alt->com12	= OV9640_COM12_YUV_AVG;

		alt->com13	= OV9640_COM13_Y_DELAY_EN |

					OV9640_COM13_YUV_DLY(0x01);

		break;

	case MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE:

		alt->com7	= OV9640_COM7_RGB;

		alt->com13	= OV9640_COM13_RGB_AVG;

		alt->com15	= OV9640_COM15_RGB_555;

		break;

	case MEDIA_BUS_FMT_RGB565_2X8_LE:

		alt->com7	= OV9640_COM7_RGB;

		alt->com13	= OV9640_COM13_RGB_AVG;

		alt->com15	= OV9640_COM15_RGB_565;

		break;

	}

}



/* Setup registers according to resolution and color encoding */

static int ov9640_write_regs(struct i2c_client *client, u32 width,

		u32 code, struct ov9640_reg_alt *alts)

{

	const struct ov9640_reg	*ov9640_regs, *matrix_regs;

	int			ov9640_regs_len, matrix_regs_len;

	int			i, ret;

	u8			val;



	/* select register configuration for given resolution */

	switch (width) {

	case W_QQCIF:

		ov9640_regs	= ov9640_regs_qqcif;

		ov9640_regs_len	= ARRAY_SIZE(ov9640_regs_qqcif);

		break;

	case W_QQVGA:

		ov9640_regs	= ov9640_regs_qqvga;

		ov9640_regs_len	= ARRAY_SIZE(ov9640_regs_qqvga);

		break;

	case W_QCIF:

		ov9640_regs	= ov9640_regs_qcif;

		ov9640_regs_len	= ARRAY_SIZE(ov9640_regs_qcif);

		break;

	case W_QVGA:

		ov9640_regs	= ov9640_regs_qvga;

		ov9640_regs_len	= ARRAY_SIZE(ov9640_regs_qvga);

		break;

	case W_CIF:

		ov9640_regs	= ov9640_regs_cif;

		ov9640_regs_len	= ARRAY_SIZE(ov9640_regs_cif);

		break;

	case W_VGA:

		ov9640_regs	= ov9640_regs_vga;

		ov9640_regs_len	= ARRAY_SIZE(ov9640_regs_vga);

		break;

	case W_SXGA:

		ov9640_regs	= ov9640_regs_sxga;

		ov9640_regs_len	= ARRAY_SIZE(ov9640_regs_sxga);

		break;

	default:

		dev_err(&client->dev, "Failed to select resolution!\n");

		return -EINVAL;

	}



	/* select color matrix configuration for given color encoding */

	if (code == MEDIA_BUS_FMT_UYVY8_2X8) {

		matrix_regs	= ov9640_regs_yuv;

		matrix_regs_len	= ARRAY_SIZE(ov9640_regs_yuv);

	} else {

		matrix_regs	= ov9640_regs_rgb;

		matrix_regs_len	= ARRAY_SIZE(ov9640_regs_rgb);

	}



	/* write register settings into the module */

	for (i = 0; i < ov9640_regs_len; i++) {

		val = ov9640_regs[i].val;



		switch (ov9640_regs[i].reg) {

		case OV9640_COM7:

			val |= alts->com7;

			break;

		case OV9640_COM12:

			val |= alts->com12;

			break;

		case OV9640_COM13:

			val |= alts->com13;

			break;

		case OV9640_COM15:

			val |= alts->com15;

			break;

		}



		ret = ov9640_reg_write(client, ov9640_regs[i].reg, val);

		if (ret)

			return ret;

	}



	/* write color matrix configuration into the module */

	for (i = 0; i < matrix_regs_len; i++) {

		ret = ov9640_reg_write(client, matrix_regs[i].reg,

						matrix_regs[i].val);

		if (ret)

			return ret;

	}



	return 0;

}



/* program default register values */

static int ov9640_prog_dflt(struct i2c_client *client)

{

	int i, ret;



	for (i = 0; i < ARRAY_SIZE(ov9640_regs_dflt); i++) {

		ret = ov9640_reg_write(client, ov9640_regs_dflt[i].reg,

						ov9640_regs_dflt[i].val);

		if (ret)

			return ret;

	}



	/* wait for the changes to actually happen, 140ms are not enough yet */

	mdelay(150);



	return 0;

}



/* set the format we will capture in */

static int ov9640_s_fmt(struct v4l2_subdev *sd,

			struct v4l2_mbus_framefmt *mf)

{

	struct i2c_client *client = v4l2_get_subdevdata(sd);

	struct ov9640_reg_alt alts = {0};

	int ret;



	ov9640_alter_regs(mf->code, &alts);



	ov9640_reset(client);



	ret = ov9640_prog_dflt(client);

	if (ret)

		return ret;



	return ov9640_write_regs(client, mf->width, mf->code, &alts);

}



static int ov9640_set_fmt(struct v4l2_subdev *sd,

		struct v4l2_subdev_pad_config *cfg,

		struct v4l2_subdev_format *format)

{

	struct v4l2_mbus_framefmt *mf = &format->format;



	if (format->pad)

		return -EINVAL;



	ov9640_res_roundup(&mf->width, &mf->height);



	mf->field = V4L2_FIELD_NONE;



	switch (mf->code) {

	case MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE:

	case MEDIA_BUS_FMT_RGB565_2X8_LE:

		mf->colorspace = V4L2_COLORSPACE_SRGB;

		break;

	default:

		mf->code = MEDIA_BUS_FMT_UYVY8_2X8;

		/* fall through */

	case MEDIA_BUS_FMT_UYVY8_2X8:

		mf->colorspace = V4L2_COLORSPACE_JPEG;

		break;

	}



	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)

		return ov9640_s_fmt(sd, mf);



	cfg->try_fmt = *mf;

	return 0;

}



static int ov9640_enum_mbus_code(struct v4l2_subdev *sd,

		struct v4l2_subdev_pad_config *cfg,

		struct v4l2_subdev_mbus_code_enum *code)

{

	if (code->pad || code->index >= ARRAY_SIZE(ov9640_codes))

		return -EINVAL;



	code->code = ov9640_codes[code->index];

	return 0;

}



static int ov9640_get_selection(struct v4l2_subdev *sd,

		struct v4l2_subdev_pad_config *cfg,

		struct v4l2_subdev_selection *sel)

{

	if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)

		return -EINVAL;



	sel->r.left = 0;

	sel->r.top = 0;

	switch (sel->target) {

	case V4L2_SEL_TGT_CROP_BOUNDS:

	case V4L2_SEL_TGT_CROP:

		sel->r.width = W_SXGA;

		sel->r.height = H_SXGA;

		return 0;

	default:

		return -EINVAL;

	}

}



static int ov9640_video_probe(struct i2c_client *client)

{

	struct v4l2_subdev *sd = i2c_get_clientdata(client);

	struct ov9640_priv *priv = to_ov9640_sensor(sd);

	u8		pid, ver, midh, midl;

	const char	*devname;

	int		ret;



	ret = ov9640_s_power(&priv->subdev, 1);

	if (ret < 0)

		return ret;



	/*

	 * check and show product ID and manufacturer ID

	 */



	ret = ov9640_reg_read(client, OV9640_PID, &pid);

	if (!ret)

		ret = ov9640_reg_read(client, OV9640_VER, &ver);

	if (!ret)

		ret = ov9640_reg_read(client, OV9640_MIDH, &midh);

	if (!ret)

		ret = ov9640_reg_read(client, OV9640_MIDL, &midl);

	if (ret)

		goto done;



	switch (VERSION(pid, ver)) {

	case OV9640_V2:

		devname		= "ov9640";

		priv->revision	= 2;

		break;

	case OV9640_V3:

		devname		= "ov9640";

		priv->revision	= 3;

		break;

	default:

		dev_err(&client->dev, "Product ID error %x:%x\n", pid, ver);

		ret = -ENODEV;

		goto done;

	}



	dev_info(&client->dev, "%s Product ID %0x:%0x Manufacturer ID %x:%x\n",

		 devname, pid, ver, midh, midl);



	ret = v4l2_ctrl_handler_setup(&priv->hdl);



done:

	ov9640_s_power(&priv->subdev, 0);

	return ret;

}



static const struct v4l2_ctrl_ops ov9640_ctrl_ops = {

	.s_ctrl = ov9640_s_ctrl,

};



static const struct v4l2_subdev_core_ops ov9640_core_ops = {

#ifdef CONFIG_VIDEO_ADV_DEBUG

	.g_register		= ov9640_get_register,

	.s_register		= ov9640_set_register,

#endif

	.s_power		= ov9640_s_power,

};



/* Request bus settings on camera side */

static int ov9640_g_mbus_config(struct v4l2_subdev *sd,

				struct v4l2_mbus_config *cfg)

{

	struct i2c_client *client = v4l2_get_subdevdata(sd);

	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);



	cfg->flags = V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_MASTER |

		V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_HIGH |

		V4L2_MBUS_DATA_ACTIVE_HIGH;

	cfg->type = V4L2_MBUS_PARALLEL;

	cfg->flags = soc_camera_apply_board_flags(ssdd, cfg);



	return 0;

}



static const struct v4l2_subdev_video_ops ov9640_video_ops = {

	.s_stream	= ov9640_s_stream,

	.g_mbus_config	= ov9640_g_mbus_config,

};



static const struct v4l2_subdev_pad_ops ov9640_pad_ops = {

	.enum_mbus_code = ov9640_enum_mbus_code,

	.get_selection	= ov9640_get_selection,

	.set_fmt	= ov9640_set_fmt,

};



static const struct v4l2_subdev_ops ov9640_subdev_ops = {

	.core	= &ov9640_core_ops,

	.video	= &ov9640_video_ops,

	.pad	= &ov9640_pad_ops,

};



/*

 * i2c_driver function

 */

static int ov9640_probe(struct i2c_client *client,

			const struct i2c_device_id *did)

{

	struct ov9640_priv *priv;

	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);

	int ret;



	if (!ssdd) {

		dev_err(&client->dev, "Missing platform_data for driver\n");

		return -EINVAL;

	}



	priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);

	if (!priv)

		return -ENOMEM;



	v4l2_i2c_subdev_init(&priv->subdev, client, &ov9640_subdev_ops);



	v4l2_ctrl_handler_init(&priv->hdl, 2);

	v4l2_ctrl_new_std(&priv->hdl, &ov9640_ctrl_ops,

			V4L2_CID_VFLIP, 0, 1, 1, 0);

	v4l2_ctrl_new_std(&priv->hdl, &ov9640_ctrl_ops,

			V4L2_CID_HFLIP, 0, 1, 1, 0);

	priv->subdev.ctrl_handler = &priv->hdl;

	if (priv->hdl.error)

		return priv->hdl.error;



	priv->clk = v4l2_clk_get(&client->dev, "mclk");

	if (IS_ERR(priv->clk)) {

		ret = PTR_ERR(priv->clk);

		goto eclkget;

	}



	ret = ov9640_video_probe(client);

	if (ret) {

		v4l2_clk_put(priv->clk);

eclkget:

		v4l2_ctrl_handler_free(&priv->hdl);

	}



	return ret;

}



static int ov9640_remove(struct i2c_client *client)

{

	struct v4l2_subdev *sd = i2c_get_clientdata(client);

	struct ov9640_priv *priv = to_ov9640_sensor(sd);



	v4l2_clk_put(priv->clk);

	v4l2_device_unregister_subdev(&priv->subdev);

	v4l2_ctrl_handler_free(&priv->hdl);

	return 0;

}



static const struct i2c_device_id ov9640_id[] = {

	{ "ov9640", 0 },

	{ }

};

MODULE_DEVICE_TABLE(i2c, ov9640_id);



static struct i2c_driver ov9640_i2c_driver = {

	.driver = {

		.name = "ov9640",

	},

	.probe    = ov9640_probe,

	.remove   = ov9640_remove,

	.id_table = ov9640_id,

};



module_i2c_driver(ov9640_i2c_driver);



MODULE_DESCRIPTION("SoC Camera driver for OmniVision OV96xx");

MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");

MODULE_LICENSE("GPL v2");

drivers/media/i2c/ov9640.h

0 → 100644
+208 −0
Original line number Diff line number Diff line 
/*

 * OmniVision OV96xx Camera Header File

 *

 * Copyright (C) 2009 Marek Vasut <marek.vasut@gmail.com>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */



#ifndef	__DRIVERS_MEDIA_VIDEO_OV9640_H__

#define	__DRIVERS_MEDIA_VIDEO_OV9640_H__



/* Register definitions */

#define	OV9640_GAIN	0x00

#define	OV9640_BLUE	0x01

#define	OV9640_RED	0x02

#define	OV9640_VFER	0x03

#define	OV9640_COM1	0x04

#define	OV9640_BAVE	0x05

#define	OV9640_GEAVE	0x06

#define	OV9640_RSID	0x07

#define	OV9640_RAVE	0x08

#define	OV9640_COM2	0x09

#define	OV9640_PID	0x0a

#define	OV9640_VER	0x0b

#define	OV9640_COM3	0x0c

#define	OV9640_COM4	0x0d

#define	OV9640_COM5	0x0e

#define	OV9640_COM6	0x0f

#define	OV9640_AECH	0x10

#define	OV9640_CLKRC	0x11

#define	OV9640_COM7	0x12

#define	OV9640_COM8	0x13

#define	OV9640_COM9	0x14

#define	OV9640_COM10	0x15

/* 0x16 - RESERVED */

#define	OV9640_HSTART	0x17

#define	OV9640_HSTOP	0x18

#define	OV9640_VSTART	0x19

#define	OV9640_VSTOP	0x1a

#define	OV9640_PSHFT	0x1b

#define	OV9640_MIDH	0x1c

#define	OV9640_MIDL	0x1d

#define	OV9640_MVFP	0x1e

#define	OV9640_LAEC	0x1f

#define	OV9640_BOS	0x20

#define	OV9640_GBOS	0x21

#define	OV9640_GROS	0x22

#define	OV9640_ROS	0x23

#define	OV9640_AEW	0x24

#define	OV9640_AEB	0x25

#define	OV9640_VPT	0x26

#define	OV9640_BBIAS	0x27

#define	OV9640_GBBIAS	0x28

/* 0x29 - RESERVED */

#define	OV9640_EXHCH	0x2a

#define	OV9640_EXHCL	0x2b

#define	OV9640_RBIAS	0x2c

#define	OV9640_ADVFL	0x2d

#define	OV9640_ADVFH	0x2e

#define	OV9640_YAVE	0x2f

#define	OV9640_HSYST	0x30

#define	OV9640_HSYEN	0x31

#define	OV9640_HREF	0x32

#define	OV9640_CHLF	0x33

#define	OV9640_ARBLM	0x34

/* 0x35..0x36 - RESERVED */

#define	OV9640_ADC	0x37

#define	OV9640_ACOM	0x38

#define	OV9640_OFON	0x39

#define	OV9640_TSLB	0x3a

#define	OV9640_COM11	0x3b

#define	OV9640_COM12	0x3c

#define	OV9640_COM13	0x3d

#define	OV9640_COM14	0x3e

#define	OV9640_EDGE	0x3f

#define	OV9640_COM15	0x40

#define	OV9640_COM16	0x41

#define	OV9640_COM17	0x42

/* 0x43..0x4e - RESERVED */

#define	OV9640_MTX1	0x4f

#define	OV9640_MTX2	0x50

#define	OV9640_MTX3	0x51

#define	OV9640_MTX4	0x52

#define	OV9640_MTX5	0x53

#define	OV9640_MTX6	0x54

#define	OV9640_MTX7	0x55

#define	OV9640_MTX8	0x56

#define	OV9640_MTX9	0x57

#define	OV9640_MTXS	0x58

/* 0x59..0x61 - RESERVED */

#define	OV9640_LCC1	0x62

#define	OV9640_LCC2	0x63

#define	OV9640_LCC3	0x64

#define	OV9640_LCC4	0x65

#define	OV9640_LCC5	0x66

#define	OV9640_MANU	0x67

#define	OV9640_MANV	0x68

#define	OV9640_HV	0x69

#define	OV9640_MBD	0x6a

#define	OV9640_DBLV	0x6b

#define	OV9640_GSP	0x6c	/* ... till 0x7b */

#define	OV9640_GST	0x7c	/* ... till 0x8a */



#define	OV9640_CLKRC_DPLL_EN	0x80

#define	OV9640_CLKRC_DIRECT	0x40

#define	OV9640_CLKRC_DIV(x)	((x) & 0x3f)



#define	OV9640_PSHFT_VAL(x)	((x) & 0xff)



#define	OV9640_ACOM_2X_ANALOG	0x80

#define	OV9640_ACOM_RSVD	0x12



#define	OV9640_MVFP_V		0x10

#define	OV9640_MVFP_H		0x20



#define	OV9640_COM1_HREF_NOSKIP	0x00

#define	OV9640_COM1_HREF_2SKIP	0x04

#define	OV9640_COM1_HREF_3SKIP	0x08

#define	OV9640_COM1_QQFMT	0x20



#define	OV9640_COM2_SSM		0x10



#define	OV9640_COM3_VP		0x04



#define	OV9640_COM4_QQ_VP	0x80

#define	OV9640_COM4_RSVD	0x40



#define	OV9640_COM5_SYSCLK	0x80

#define	OV9640_COM5_LONGEXP	0x01



#define	OV9640_COM6_OPT_BLC	0x40

#define	OV9640_COM6_ADBLC_BIAS	0x08

#define	OV9640_COM6_FMT_RST	0x82

#define	OV9640_COM6_ADBLC_OPTEN	0x01



#define	OV9640_COM7_RAW_RGB	0x01

#define	OV9640_COM7_RGB		0x04

#define	OV9640_COM7_QCIF	0x08

#define	OV9640_COM7_QVGA	0x10

#define	OV9640_COM7_CIF		0x20

#define	OV9640_COM7_VGA		0x40

#define	OV9640_COM7_SCCB_RESET	0x80



#define	OV9640_TSLB_YVYU_YUYV	0x04

#define	OV9640_TSLB_YUYV_UYVY	0x08



#define	OV9640_COM12_YUV_AVG	0x04

#define	OV9640_COM12_RSVD	0x40



#define	OV9640_COM13_GAMMA_NONE	0x00

#define	OV9640_COM13_GAMMA_Y	0x40

#define	OV9640_COM13_GAMMA_RAW	0x80

#define	OV9640_COM13_RGB_AVG	0x20

#define	OV9640_COM13_MATRIX_EN	0x10

#define	OV9640_COM13_Y_DELAY_EN	0x08

#define	OV9640_COM13_YUV_DLY(x)	((x) & 0x07)



#define	OV9640_COM15_OR_00FF	0x00

#define	OV9640_COM15_OR_01FE	0x40

#define	OV9640_COM15_OR_10F0	0xc0

#define	OV9640_COM15_RGB_NORM	0x00

#define	OV9640_COM15_RGB_565	0x10

#define	OV9640_COM15_RGB_555	0x30



#define	OV9640_COM16_RB_AVG	0x01



/* IDs */

#define	OV9640_V2		0x9648

#define	OV9640_V3		0x9649

#define	VERSION(pid, ver)	(((pid) << 8) | ((ver) & 0xFF))



/* supported resolutions */

enum {

	W_QQCIF	= 88,

	W_QQVGA	= 160,

	W_QCIF	= 176,

	W_QVGA	= 320,

	W_CIF	= 352,

	W_VGA	= 640,

	W_SXGA	= 1280

};

#define	H_SXGA	960



/* Misc. structures */

struct ov9640_reg_alt {

	u8	com7;

	u8	com12;

	u8	com13;

	u8	com15;

};



struct ov9640_reg {

	u8	reg;

	u8	val;

};



struct ov9640_priv {

	struct v4l2_subdev		subdev;

	struct v4l2_ctrl_handler	hdl;

	struct v4l2_clk			*clk;



	int				model;

	int				revision;

};



#endif	/* __DRIVERS_MEDIA_VIDEO_OV9640_H__ */

drivers/media/i2c/soc_camera/Kconfig

+4 −2

File changed.

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